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Anionic polymerization of isoprene: Effect of ionic character of the growing ion pair on polymer structure (1959)

Tobolsky, A. V. ; Rogers, C. E.

Hoboken, NJ : Wiley-Blackwell

Journal of Polymer Science 38 (1959), S. 205-207

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ISSN: 0022-3832

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: The styrene content of styrene-isoprene copolymers initiated by alkali metals in different solvents is correlated with the total 1,4-adduct content of isoprene homopolymers initiated in the same manner. A very good linear relationship is obtained over the whole range which is dependent on the ionic character of the propagating species highly ionic systems (i.e., Na in ethers) give high styrene and low 1,4-adduct contents, while less ionic systems, i.e., butyllithium in aromatic ethers and in hydrocarbons, give progressively lower styrene and higher 1,4-adduct contents.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pol.1959.1203813317

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